# sqlite3 --- DB-API 2.0 interface for SQLite databases — Exceptions

> The exception hierarchy is defined by the DB-API 2.0 (249). This exception is not currently raised by the !sqlite3 module, but may be raised by applications using !sqlite3, for example if a user-defined function truncates data while inserting. Warning is a subclass of Exception. The base class of th

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The exception hierarchy is defined by the DB-API 2.0 (249).

This exception is not currently raised by the !sqlite3 module, but may be raised by applications using !sqlite3, for example if a user-defined function truncates data while inserting. Warning is a subclass of Exception.

The base class of the other exceptions in this module. Use this to catch all errors with one single except statement. Error is a subclass of Exception.

If the exception originated from within the SQLite library, the following two attributes are added to the exception

Exception raised for misuse of the low-level SQLite C API. In other words, if this exception is raised, it probably indicates a bug in the !sqlite3 module. InterfaceError is a subclass of Error.

Exception raised for errors that are related to the database. This serves as the base exception for several types of database errors. It is only raised implicitly through the specialised subclasses. DatabaseError is a subclass of Error.

Exception raised for errors caused by problems with the processed data, like numeric values out of range, and strings which are too long. DataError is a subclass of DatabaseError.

Exception raised for errors that are related to the database's operation, and not necessarily under the control of the programmer. For example, the database path is not found, or a transaction could not be processed. OperationalError is a subclass of DatabaseError.

Exception raised when the relational integrity of the database is affected, e.g. a foreign key check fails. It is a subclass of DatabaseError.

Exception raised when SQLite encounters an internal error. If this is raised, it may indicate that there is a problem with the runtime SQLite library. InternalError is a subclass of DatabaseError.

Exception raised for !sqlite3 API programming errors, for example supplying the wrong number of bindings to a query, or trying to operate on a closed Connection. ProgrammingError is a subclass of DatabaseError.

Exception raised in case a method or database API is not supported by the underlying SQLite library. For example, setting deterministic to True in ~Connection.create_function, if the underlying SQLite library does not support deterministic functions. NotSupportedError is a subclass of DatabaseError.

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